<?php
$http = new swoole_http_server("127.0.0.1", 9501, SWOOLE_BASE);

$http->set([
    'worker_num' => 4,
]);

$http->on('request', function ($request, swoole_http_response $response) {
    $response->header('Last-Modified', 'Thu, 18 Jun 2015 10:24:27 GMT');
    $response->header('E-Tag', '55829c5b-17');
    $response->header('Accept-Ranges', 'bytes');    
    $response->end("<h1>\nHello Swoole.\n</h1>");
});

$http->start();